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probe: Default z_position to the configured minimum position on Z axis 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-03-14 15:30:58 -04:00
parent ef8c464d97
commit 36612fd544
2 changed files with 10 additions and 14 deletions
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3
config/example-extras.cfg
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@ -19,9 +19,6 @@
# Probe detection pin. This parameter must be provided. # Probe detection pin. This parameter must be provided.
#speed: 5.0 #speed: 5.0
# Speed (in mm/s) of the Z axis when probing. The default is 5mm/s. # Speed (in mm/s) of the Z axis when probing. The default is 5mm/s.
#z_position: 0.0
# The Z position to command the head to move to during a PROBE
# command. The default is 0.
#activate_gcode: #activate_gcode:
# A list of G-Code commands (one per line) to execute prior to each # A list of G-Code commands (one per line) to execute prior to each
# probe attempt. This may be useful if the probe needs to be # probe attempt. This may be useful if the probe needs to be

21
klippy/extras/probe.py
View File

@ -7,21 +7,22 @@ import pins, homing
HINT_TIMEOUT = """ HINT_TIMEOUT = """
Make sure to home the printer before probing. If the probe Make sure to home the printer before probing. If the probe
did not move far enough to trigger, then consider setting did not move far enough to trigger, then consider reducing
the probe z_position (and the Z axis minimum position) to a the Z axis minimum position so the probe can travel further
negative value. (the Z minimum position can be negative).
"""
HINT_MOVE_ERROR = """
Make sure the probe z_position is in range of the Z axis
minimum and maximum position. (The minimum position may
be set to a negative number.)
""" """
class PrinterProbe: class PrinterProbe:
def __init__(self, config): def __init__(self, config):
self.printer = config.get_printer() self.printer = config.get_printer()
self.speed = config.getfloat('speed', 5.0) self.speed = config.getfloat('speed', 5.0)
self.z_position = config.getfloat('z_position', 0.) # Infer Z position to move to during a probe
if config.has_section('stepper_z'):
zconfig = config.getsection('stepper_z')
self.z_position = zconfig.getfloat('position_min', 0.)
else:
pconfig = config.getsection('printer')
self.z_position = pconfig.getfloat('minimum_z_position', 0.)
# Create an "endstop" object to handle the probe pin # Create an "endstop" object to handle the probe pin
ppins = self.printer.lookup_object('pins') ppins = self.printer.lookup_object('pins')
pin_params = ppins.lookup_pin('endstop', config.get('pin')) pin_params = ppins.lookup_pin('endstop', config.get('pin'))
@ -66,8 +67,6 @@ class PrinterProbe:
reason = str(e) reason = str(e)
if "Timeout during endstop homing" in reason: if "Timeout during endstop homing" in reason:
reason += HINT_TIMEOUT reason += HINT_TIMEOUT
elif "Move out of range" in reason:
reason += HINT_MOVE_ERROR
raise self.gcode.error(reason) raise self.gcode.error(reason)
self.gcode.reset_last_position() self.gcode.reset_last_position()
cmd_QUERY_PROBE_help = "Return the status of the z-probe" cmd_QUERY_PROBE_help = "Return the status of the z-probe"